Abstract: A computer program product to determine correlations between seemingly independent datasets including operations of receiving an indication of one or more reference files, receiving an indication of one or more connections between the one or more reference files and individual ones of one or more fact attributes of a fact file, modifying, in response to identifying the first connection, the fact file to include the one or more reference values associated with the first reference attribute to create an enriched fact file. Time-specific fact files may be generated corresponding to each permutation of a single fact attribute and a single time value in the enriched fact file. Correlations may be determined between individual fact values of a previous time series generated from the time-specific fact files and individual fact values of the generated time series based on the determined lag times.